N vent ob



(No Model.)

J. O. BARRETT. VISE.

No. 444,326. Patented Jan 6, 1891.

INVENTOK Att s d d, I.

UNITED STATES rFicE.

ATENT JAMES O. BARRET", OF MEADVILLE, PENNSYLVANIA, ASSIGNOR TO THE MEADVILLE VISE COMPANY, LIMITED, OF SAME PLACE.

VISE.

SPECIFICATION forming part of Letters Patent No. 444,326, dated January 6, 1891.

Application filed October 18, 1838. Serial No. 288,525- (No model.)

To all whom it may concern:

Be it known that I, JAMES O. BARRETT, a citizen of the United States, residing at Meadville, in the county of Crawford and State of Pennsylvania, have invented certainnew and useful Improvements in Vises; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to vises; and it consists of certainimprovements in the construction of the same, as will be hereinafter fully set forth, and pointed out in the .claims.

The particular features of my invention are as follows: First, improvements in the means by which the vise is swiveled on its base, and second, improvements in the means by which the traveling jaw is pivoted so as to set at an angle to the fixed jaw, when desired.

My invention is illustrated in the accompanying drawings, as follows:

Figure 1 is a longitudinal vertical section on the line y y in Fig. 2, with internal parts in elevation. Fig. 2 is a top or plan view with the fixed jawin horizontal section on the line Z Z in Fig. 3. Fig. 3 is a transverse vertical section on the line X X in Fig. 1.

The letters of reference indicate parts in the several figures as follows:

A is the fixed jaw. A is the movable jaw; A the bar of the movable jaw. B is the base of the vise. O is a clamping-plate. (J is a clamping-screw. D is a swivel-block. E is the vise-screw, and cl is the nut of the screw E.

Other letters will be referred to in proper place in the following general description of the construction and operation of the vise.

The base 13 is adapted to be secured to the vise -bench in the ordinary manner. It is faced off on top to form a seat for the jaw A, and it has a circular opening through it to receive the clamping-plate O and the pivotblock D. This central circular opening has an inwardly-pro ecting flange b, as seen in Figs. 1 and 2, which lies over the clampingplate 0. The fixed jaw A has a wide flanging base, which sets onto the base B, and it has a flaring transverse opening a to receive the bar A of the traveling jaw A. The clampingscrews O 0' pass through the flanging base of the jaw A and tap into the plate 0, and by properly turning these screws the plate 0 can be made to bind upon the flange b or not, as desired. When the plate 0 is not firmly set against the flange Z), the vise can be turned upon the base B, as desired, and then, by means of the screws 0', it can be clamped upon the base in any position desired. The pivot-block D sets upon the clamping-plate O, and its flanging base (1 is cut away, so as to allow the screws 0 to pass by it and not interfere with its pivotal movement. (The space cut away, as just named, is marked (1 in Fig. 1.)

On the top part of the pivot-block D there is an extension having a screw-threaded opening, which forms the nut (Z of the main screw E. The pivot-block D is journaled in the central openingin the base B, and in a concentric central opening in the base of the jaw A, and the extension on its top extends up into the transverse opening a of the jaw A, where it is received within the longitudinal cavity in the bar A of the jaw A. The pivot-block is in effect a flanged journaled nut. The object of this pivot-block is to allow the bar A to swing pivotally, and thus allow the jaw A to be set at an angle to the jaw A, so that the jaws can grip a tapering piece of work. The transverse opening a through the jaw A,

in which the bar A moves, is made flaring,

as seen in Fig. 2, to allow the bar A to move pivotally. The pivotal action of the jaw A can be prevented by the pin (1 (seen in Fig. 2,) which passes down through the flanging base of the jaw A and enters a hole in the flange (Z' of the pivot-block D.

I am aware that Letters Patent of the United States No. 279,260, to M. G. Lewis, shows a vise having its non-traveling jaw pivoted on its base and its traveling jaw pivoted at its base on the bar; and I shall therefore not broadly claim the combination of a swiveled non -traveling jaw with a traveling jaw, which is swiveled so as to move pivotally independently of the non-traveling jaw. My invention in this respect consists in pivoting both jaws on a common center.

What I claim as new isl. In a vise, the combination, substantially as shown, of a fixed jaw having a transverse opening (L to receive the bar of the movable jaw, a Hanging base below said opening, and a central opening through said Hanging base into said opening a, a pivot-block I), journaled in said central opening, which has a flange (1' below said base, and an extension, in which is the nut (I, which extends up into the said opening a,

2. In a vise, the combination, substantially as shown, of abase ll, having a central opening with an inwardly-projecting flange Z), a fixed jaw A, having a flanging base, a transverse opening a to receive the bar of the movable jaw, and a central opening through the base into the opening ma pivot-block D, carrying the nut of the screw of the movable jaw, which is jcurnaled in the central opening in the base 13, and the jaw A, a clampingplate Gin the said central opening, in the baseB below the flange b and below the pivotblock 1), and clamping-screws C, which bear on the base of the jaw A and tap into the clamping-plate C.

b. In a vise, the combination, with a swivelcd non-traveling jaw, of a traveling jaw which has its bar pivoted concentric with the non-traveling jaw and movable pivotally on said common center independent of said nontraveling jaw.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES O. BARRETT.

\Vitnesses:

O. J. BARRETT, J. H. CULBERTSON. 

